Expansion of 1/((1+2*x)*(1-4*x-4*x^2)).

Terms

a(0) =1a(1) =2a(2) =16a(3) =64a(4) =336a(5) =1568a(6) =7680a(7) =36864a(8) =178432a(9) =860672a(10) =4157440a(11) =20070400a(12) =96915456a(13) =467935232a(14) =2259419136a(15) =10909384704a(16) =52675280896a(17) =254338531328